Position control of ultrasonic motors using MRAC with dead-zone compensation


The ultrasonic motor has a heavy nonlinearity, which varies with driving conditions and possesses variable dead zone in the control input associated with applied load torque. This dead zone is a problem as an accurate positioning actuator for industrial applications and it is important to eliminate the dead zone in order to improve the control performance… (More)
DOI: 10.1109/41.969411


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